A 100-hp 60Hz six-pole 460V three-phase wound-rotor inductionmotor develops full-load torque at 1152.r/min with the rotorshort-circuited. An external noninductive resistance of 1Ω isplaced in series with each phase of the rotor, and the motor isabserved to develop its rated torque at a speed of 1116 r/min.Calculate the resistance per phase of the original.